after upgrade the gtk library, when using someof fonts, display is missing.

[Strange]

Binary package hint: libgtk2.0-0

when upgrade from edgy to dapper, or only upgrade the gtk library to
 libgtk2.0-0 2.8.18-0ubuntu2. And using someof fonts such as wenquanyi or simsun, a pragraph of text splitted by space will only display the first word leaving the words after first space blank.
This bug could simply reproduced by using wenquanyi fonts and using nautilus to explore some directoies contains of word and spaces, such as "My Document". In this case, only the word "My" will be displayed.
I think it's a bug as everything is ok in edgy, and lots of people said, after upgrade, this bug is found.

[Sebastien Bacher (seb128)]

do you downgrade to dapper or upgrade to edgy?

[Michael S. (jellicle)]

I can confirm there's a bug here somewhere. Using all the latest Edgy packages (libgtk2.0 2.10.1), certain GTK2 applications have terrible font rendering. Gaim and Gnucash show this, but Firefox does not. The bug submitter is saying it's also visible in Nautilus.

Fonts are thin and jagged. Many words are not visible unless moused-over or highlighted, which is basically what the bug submitter is trying to describe.

[Sebastien Bacher (seb128)]

what font do you use? could you provide a screenshot of the issue?

[Sebastien Bacher (seb128)]

That was a libcairo bug and it's fixed with this upload:

 libcairo (1.2.0-5ubuntu1) edgy; urgency=low
 .
   * debian/control:
     - don't require a directfb newer than the ubuntu package
 .
 libcairo (1.2.0-5) unstable; urgency=medium
 .
   * Rebuild against directfb 0.9.25 which has changed library and udeb
     package names from 0.9.24 that all earlier cairos were built against,
     and which are now removed. This should prevent Cairo from becoming
     uninstallable due to this change. Urgency medium due to this.
 .
 libcairo (1.2.0-4) unstable; urgency=medium
 .
   * Added patch cairo-bug-7494.patch (Closes: #378005)
   * Added patch cairo-bug-7514.patch (Closes: #380064)

[Paul Sladen (sladen)]

Turns out that this isn't actually a bug in Cairo, but in the X server; and the cairo patch is merely a workaround that doesn't actually fix the core issue:

  https://bugs.freedesktop.org/show_bug.cgi?id=7681